The smallest
of all peoples.
"For you are the smallest of all peoples" (Deuteronomy 7, 7). From the 1st century to today, the curve of the Jewish people does not follow that of humanity: it collapses when the world grows slowly, it soars before others, and it bears the hollow trace of each catastrophe. Two curves, twenty centuries — Jewish history read in numbers.
The world grows, Israel fluctuates.
In the year 1, historians estimate the number of Jews between 4.5 and 8 million, for approximately 255 million humans. Twenty centuries later, they number 15.8 million out of 8.2 billion. Between the two: a millennial collapse, a modern explosion, an amputation — the Shoah — and a slow recovery.
How many Jews per thousand humans?
Comparing the two curves tells another story: nearly 18 Jews per 1,000 humans in the 1st century, barely 2 at the nadir of medieval expulsions — then a rise to nearly 8 per 1,000 by 1925, broken by the Shoah. Today, the share stabilizes around 2 per 1,000.
Twenty centuries, fifteen estimates.
No census before the 19th century: each line is a learned estimate, rounded and debated — sources appear in the footnotes.
What the curves tell.
Abundant antiquity
In the 1st century, between one in thirty and one in sixty humans is Jewish, according to estimates. Powerful communities live in Alexandria, Rome, Babylonia: the diaspora precedes the destruction of the Temple, it does not begin with it.
The long low tide
From the 1st to the 15th century, the number falls from about 4.5 million to 1 million: crushed revolts, plagues, conversions, expulsions. While humanity doubles, the Jewish people contracts — the longest ebb in its demography.
The modern explosion
From 1800 to 1939, the Jewish population is multiplied by more than six — from 2.5 to 16.6 million — while the world merely doubles. Demographic transition, early in Eastern Europe, makes it one of the fastest-growing peoples of the 19th century.
The rupture
The Shoah removes a third of the people in six years. Eighty years later, the 1939 level is still not recovered: 15.8 million in 2025 — while humanity has more than tripled.
How many Jews have ever lived?
The two curves show how many Jews were alive at a given date. They do not say how many there have been in total. To answer, one must stop counting the living and cumulate births, from Abraham to today. Here is what the calculation yields — and what it is worth.
Neither is a census. DellaPergola’s is published and peer-reviewed; this page’s is a zakhor.ai calculation applied to population estimates that do come from published work. Salo Baron, for his part, never published a cumulative total: what is his are the high ancient populations on which the upper bound of the range rests.
The method is the same on both sides — births are cumulated, living people are not counted. What separates the two totals comes down to two assumptions, and they pull the same way: how many Jews in antiquity, and at what birth rate. DellaPergola holds 2.5 million Jews in year 1 and 25 ‰ before 1700; this page holds 4.5 million and 42 ‰. Raising year 1 to Salo Baron’s 8 million leads to 240 millions; adding the Population Reference Bureau’s rates on top leads to 350.
The method, in four steps
Count births, not the living
The number of people who have ever lived depends on no mortality rate: it is the sum of births. For each period, one multiplies the person-years lived by the birth rate of the time. This is the method the Population Reference Bureau applies to all of humanity, yielding 117 billion humans born since the emergence of Homo sapiens.
Extend the curve before year 1
The anchors on this page begin at year 1. Seven anchors extend it upstream — the archaeology of settlement and surface surveys, never narratives. They are listed below with what grounds them.
Set a birth rate per epoch
Under a high-mortality regime, roughly forty births per thousand inhabitants per year are needed merely to maintain a population. This rate then falls, earlier among European Jews than elsewhere. Four sets of hypotheses are calculated, including that of the Population Reference Bureau itself.
Integrate, segment by segment
Between two anchors, the population is interpolated geometrically: a population grows in proportion to itself, never by steps. No segment spans two rates — the division combines anchors and rate boundaries.
The anchors before the common era
Seven estimates, all debated, none better than an order of magnitude. Together they account for 13 % of the total: their fragility does not propagate to the result.
What each hypothesis yields
At Population Reference Bureau rates — the only ones comparable to its 117 billion — the calculation yields 290 million Jews born. One human out of 400 who ever lived would thus have been Jewish.
When were they born?
One third of the total falls within the six centuries following the destruction of the Temple: the Jewish population is still large there, and each generation is short. Only a quarter have been born since 1800.
About 7.8% of Jews ever born are alive today — one out of 13. For all humanity, the Population Reference Bureau gives 6.8%: the proportion is of the same order, despite trajectories that have nothing in common.
The limits of estimation
'Since Abraham' is not a date
Neither the Bible nor archaeology dates Abraham; the Middle Bronze Age is a convention, not a fact. The calculation starts from −1800 for convenience. This choice costs little: tripling all anchors prior to the kingdoms shifts the total by only 3%.
The birth rate decides everything
It is the heaviest and least known parameter. With identical population curves, moving from the low hypothesis to that of the Population Reference Bureau varies the total by 75%. No register allows one to settle the matter: one chooses a demographic regime, one does not measure it.
Antiquity weighs one third, and it is the most disputed estimate
Retaining 8 million Jews in year 1 with Salo Baron rather than 4.5 million with Sergio DellaPergola adds 19% to the total. And the very rapid growth attributed to the two preceding centuries — conversions, proselytism, rise of the diasporas — is itself a hypothesis, not a survey.
'Jew' does not designate the same ensemble over thirty-eight centuries
Highlanders of Israel, Judeans of the Persian province, proselytes of the Roman Empire, Samaritans, Karaites, Marranos, 'core Jewish population' of the American Jewish Year Book since 1945: the same line counts different ensembles. No definition crosses the period.
These are births, not lives
Under these mortality regimes, a considerable share of newborns died before age five. The total thus does not describe two hundred million adult lives — and even less two hundred million destinies whose traces one could recover.
Between two anchors, the curve affirms nothing
Interpolation smooths what it passes through. The revolts of 70 and 135, the Black Death, the expulsions, the Shoah are in the anchors, but their exact profile is lost: the calculation preserves their level, not their brutality.
Estimates, not censuses.
Before the 19th century, no one counted Jews — or the rest of humanity. The figures presented here are learned reconstructions: tax lists, ancient geographies, community registers, retrojections. The curves connect discrete milestones; between two milestones, they affirm nothing.
For antiquity, the gap between historians remains wide: from 4.5 million (Sergio DellaPergola) to 8 million (Salo W. Baron) around year 1 — the curves adopt the lower estimate. Since 1945, the 'core Jewish population' follows the definition of the American Jewish Year Book: people who declare themselves Jewish, without non-Jewish close relatives in households.
- Salo W. Baron, « Population », Encyclopaedia Judaica, 1971
- Sergio DellaPergola, « World Jewish Population », American Jewish Year Book, série annuelle
- Jean-Noël Biraben, « Essai sur l’évolution du nombre des hommes », Population, 1979
- Colin McEvedy & Richard Jones, Atlas of World Population History, 1978
- Nations unies, World Population Prospects, 2024
- Sergio DellaPergola, « Notes toward a Demographic History of the Jews », Genealogy 8(1), 2, 2024, § 1.5 « How Many Jews ever Lived? »
- Toshiko Kaneda & Carl Haub, « How Many People Have Ever Lived on Earth? », Population Reference Bureau, 2022
- Israel Finkelstein & Magen Broshi, « The Population of Palestine in Iron Age II », BASOR 287, 1992
- Avi Ofer, relevés de peuplement des monts de Juda ; Charles E. Carter, The Emergence of Yehud in the Persian Period, 1999 ; Oded Lipschits, The Fall and Rise of Jerusalem, 2005
Behind each curve, lineages.
These millions have names, cities, filial lines. Explore the tree of Jewish lineages — or search for yours.